Knowledge of earth's interior comes from the study of knowledge of earth's interior comes from the study of a. deep wells b. tsunamis c. meteorites and seismic waves d. mountains and trenches

Knowledge of Earth's interior comes from the study of C. meteorites and seismic waves.
Studying earthquakes and figuring out why they occur is important if we want to know more about the interior of our planet. This is because earthquakes and seismic waves are created because of the activities within the Earth's interior. 

The answer is the magnetosphere.

The  franco-prussian  war, a  war  that was  led by prussia a coalition of  german  states, defeated  france. the  war  was the end  of  french  hegemony in europe and resulted in a unified  germany.  i hope this !